C1111233131211111211113313331333133313332313113313331322331322233213331   >>    C111123313121111121111331333133313331333231311331333132233132223321333   <<    C1111233131211111211113313331333133313332313113313331322331322233213333   >>      C1111233131211111211113313331333133313332313113313331322331322233213332   >>